A gent that just resurfaced my asphalt driveway has one in a 3500 Duelly with a steel work frame with tanks, pumps and mucho equipment on it getting an avg of 15 mpg, tank to tank, and 18 mpg hwy mileage. It's a 2wd.
The degree of my privacy is no business of yours.
What we've learned from history is that we haven't learned from it.